Lightweight and adjustable headband Soft and comfortable ear cushions Flexible microphone boom Plug and play Volume control for speaker and mute option for the microphone Impedance: 150 Ohm ± 15% At 1500 Hz/l.0V Lowest Respond Frequency: 550 ±150 Hz. Frequency Range: F0-6000 Hz. Average SPL-l0dB. Cable length: 2M Operating systems compatibility: Windows/MAC/Linux Software compatibility: Skype, Zoom, Microsoft Teams and other video conferencing software